package com.sky.service.impl;

import com.fasterxml.jackson.databind.ser.Serializers;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private DishMapper dishMapper;

    @Override
    public void saveCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        category.setStatus(StatusConstant.ENABLE);
        category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.save(category);
    }

    @Override
    public PageResult seleteCategory(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.seleteCategory(categoryPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    public void setStatus(Integer status, Long id) {
        categoryMapper.setStatus(status,id);
    }

    @Override
    public void deleteById(Integer id) {
        //当前分类关联套餐不能删除
        List<Setmeal> list = setmealMapper.selectById(id);
        if(list.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        //当前分类关联了菜品不能删除
        List<DishVO> dishVOList = dishMapper.selectByCategoryId(id);
        if(dishVOList.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        categoryMapper.deleteById(id);
    }

    @Override
    public void updateCatgory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        category.setUpdateUser(BaseContext.getCurrentId());
        category.setUpdateTime(LocalDateTime.now());
        categoryMapper.updateCatgory(category);
    }

    @Override
    public List<Category> selectByType(Integer list) {
        return categoryMapper.selectType(list);
    }
}
